Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
1988-06-30	0
1988-12-31	0
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	2
1992-06-30	8
1992-12-31	8
1993-06-30	5
1993-12-31	3
1994-06-30	5
1994-12-31	19
1995-06-30	37
1995-12-31	57
1996-06-30	92
1996-12-31	55
1997-06-30	75
1997-12-31	84
1998-06-30	85
1998-12-31	97
1999-06-30	91